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  2. International Mobile Equipment Identity - Wikipedia

    en.wikipedia.org/wiki/International_Mobile...

    The last number of the IMEI is a check digit, calculated using the Luhn algorithm, as defined in the IMEI Allocation and Approval Guidelines: The Check Digit shall be calculated according to Luhn formula (ISO/IEC 7812). (See GSM 02.16 / 3GPP 22.016). The Check Digit is a function of all other digits in the IMEI.

  3. Electronic serial number - Wikipedia

    en.wikipedia.org/wiki/Electronic_serial_number

    As ESNs have essentially run out, a new serial number format, MEID, was created by 3GPP2 and was first implemented by Verizon in 2006. MEIDs are 56 bits long, the same length as the IMEI and, in fact, MEID was created to be a superset of IMEI.

  4. iPhone 5 - Wikipedia

    en.wikipedia.org/wiki/IPhone_5

    This was the second iPhone after the iPhone 4s to include Apple's new Sony-made 8 MP ... Tap "Settings > General > About" to check serial number A1428, other serial ...

  5. iPhone 6s - Wikipedia

    en.wikipedia.org/wiki/IPhone_6s

    Customers with affected devices, which span "a limited serial number range", were able to check their device's serial number on Apple's website, and, if affected, receive a battery replacement free of charge at Apple Stores or authorized Apple Service Providers. [63] [64] [65]

  6. Check digit - Wikipedia

    en.wikipedia.org/wiki/Check_digit

    The final digit of a Universal Product Code, International Article Number, Global Location Number or Global Trade Item Number is a check digit computed as follows: [3] [4]. Add the digits in the odd-numbered positions from the left (first, third, fifth, etc.—not including the check digit) together and multiply by three.

  7. List of generic and genericized trademarks - Wikipedia

    en.wikipedia.org/wiki/List_of_generic_and...

    A number of U.S. organizations nowadays are required to refer its sport as table tennis as means of trademark protection. [167] [168] Plasticine: Modelling clay: Flair Leisure Products plc: Often applied as a name for a putty-like modelling material made from calcium salts, petroleum jelly and aliphatic acids.

  8. PlayStation models - Wikipedia

    en.wikipedia.org/wiki/PlayStation_models

    A number of models of Sony's PlayStation (PS) video game console were produced from 1994 to 2006. Most revisions of the PlayStation were made to fix known hardware issues or lower production costs and time, while others featured substantial external changes.

  9. Smartphone - Wikipedia

    en.wikipedia.org/wiki/Smartphone

    Locking of the serial number was first documented in 2015 on the iPhone 6, which would become inoperable from a detected replacement of the "home" button. Later, some functionality was restricted on Apple and Samsung smartphones when a battery replacement not authorized by the vendor was detected.